Loadrunner measure response size

Hi there,

I'm trying to measure the size of an XML response with LoadRunner.

The response is broken up into chunks, as can be seen from the debug log:

t=10082ms: 12288-byte DECODED response body for <insert url here>

So I need to add the size of all these chunks together in order to get the size of the response.

Unfortunately I can't figure out how I can get the values - I only see it output during debug mode. I thought perhaps web_get_int_property(HTTP_INFO_DOWNLOAD_SIZE) would work but that's not it, unfortunately. That gives a different value altogether, often 10 times smaller than the actual data returned.

Using web_reg_save_param() also fails because the value isn't in the actual data returned.

Any ideas? Google is failing me, as is the Help which comes with LoadRunner.